M&S says

Whether you’re after a halter neck or a strapless look, this bandeau bikini top with its removable strap offers you both options. Featuring a vibrant coloured design detailed with a striped strap and front tie, this swimwear top is more than just a pretty piece, complete with British Skin Foundation verified Sun Smart UPF50+ technology. It’ll also stay looking great even with regular wash and wear thanks to the StayNEW™ Chlorine Resist finish.

Care and Composition

35 days to return
You may return unused products within 35 days of purchase with a valid parcel summary document. Your items don't need to be in the original box or bag as long as they're securely packaged.

How to return
It’s easy to return items to M&S. Simply print the returns label, attach it to the top of your parcel and insert the returns note in the parcel. Drop your parcel at a local post office. We will automatically deduct the cost of return from your refund.

* 20% off promotion applies at checkout: 20% off full price clothing, shoes and homeware. Offer commences 18/03/2019 at 12:00 am UK time and ends 25/03/2019 at 23:59 UK time at www.marksandspencer.com/* only. Promotion applies at checkout. Please check relevant delivery terms and conditions online. Cannot be used in conjunction with any other promotion, offer or discount code. Sale items are excluded. Offer does not apply to delivery charges. Any refunds will take into account the discount. M&S reserves the right to reject this offer with reasonable cause